NANO = 1e-9
MICRO = 1e-6
MILLI = 1e-3
CENTI = 1e-2
DECI = 1e-1
KILO = 1e3
MEGA = 1e6
GIGA = 1e9

# Time units
SECOND = 1
MINUTE = 60 * SECOND
HOUR = 60 * MINUTE
DAY = 24 * HOUR
YEAR = 365 * DAY

KILOGRAM = 1
GRAM = 1e-3 * KILOGRAM

METER = 1

# Pressure related quantities
DARCY = 9.869233e-13
PASCAL = 1
BAR = 101325 * PASCAL

# force
NEWTON = KILOGRAM * METER / SECOND ** 2
